Unibus high speed synchronous serial boards

[Stirling]

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Does anybody out there have experience with Unibus devices for high-speed
(>100 kbaud) serial transmission?  The application is for communicating with a
network of imaging workstations that will talk some form of SDLC protocol with
Zilog 8530 type USARTs.  Also a 4.2 BSD driver would be very desirable.  If
there are enough replies I will summarize for the net.

Thanks - Ralph Stirling
	 pur-ee!stirling